The Print attached is the base layer of a rectangle that should be filled for the first layer.
Problem is, the border sticks very well to the bed as the print begins. The infill doesn't; it warps outward instead.
I changed Temperature from 185°C to 175°C during the last half of the layer (lower left corner). The bed temperature was set to 60°C material is PLA 0.4mm first layer hight.